Oh yeah, and the blades that are sold with the airplane match the motor to the airplane. Change prop diameter or pitch of the prop on an electric motor and you can cause problems. Electric motors really don't like more load than they're designed for.

There are usually numbers on props. One is the diameter of the prop and is simple enough. The other is what the manufacturer thinks is the pitch of the prop. He thinks that pitch will pull the expected load forward about that distance each revolution of the prop. It's pretty basic and minimal information to have, but it's all we get. And often one mfg doesn't believe what another mfg believes. So you can't take the pitch numbers to the bank.

BTW, the widest part of the blade has a fair amount to do with how the prop works, but unfortunately that doesn't mean a thing in the task to duplicate that props performance versus what other props are available for purchase. And no mfg's list blade widths anyway.